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-rw-r--r--src/mame/video/tia.c116
1 files changed, 58 insertions, 58 deletions
diff --git a/src/mame/video/tia.c b/src/mame/video/tia.c
index f8258c98a46..131a8895df2 100644
--- a/src/mame/video/tia.c
+++ b/src/mame/video/tia.c
@@ -51,76 +51,76 @@ PALETTE_INIT_MEMBER(tia_ntsc_video_device, tia_ntsc)
/********************************************************************
Atari 2600 NTSC Palette Notes:
-Palette on a modern flat panel display (LCD, LED, Plasma, etc.)
-appears different from a traditional CRT. The most outstanding
-difference is Hue 1x, the hue begin point. Hue 1x looks very
-'green' (~-60 to -45 degrees - depending on how poor or well it
-handles the signal conversion and its calibration) on a modern
+Palette on a modern flat panel display (LCD, LED, Plasma, etc.)
+appears different from a traditional CRT. The most outstanding
+difference is Hue 1x, the hue begin point. Hue 1x looks very
+'green' (~-60 to -45 degrees - depending on how poor or well it
+handles the signal conversion and its calibration) on a modern
flat panel display, as opposed to 'gold' (~-33 degrees) on a CRT.
-The official technical documents: "Television Interface Adaptor
-[TIA] (Model 1A)", "Atari VCS POP Field Service Manual", and
+The official technical documents: "Television Interface Adaptor
+[TIA] (Model 1A)", "Atari VCS POP Field Service Manual", and
"Stella Programmer's Guide" stipulate Hue 1x to be gold.
-The system's pot adjustment manually manipulates the degree of
-phase shift, while the system 'warming-up' will automatically
-push whatever degrees has been manually set, higher. According
-to the Atari VCS POP Field Service Manual and system diagnostic
-and test (color) cart, instructions are provide to set the pot
-adjustment having Hue 1x and Hue 15x (F$) match or within one
+The system's pot adjustment manually manipulates the degree of
+phase shift, while the system 'warming-up' will automatically
+push whatever degrees has been manually set, higher. According
+to the Atari VCS POP Field Service Manual and system diagnostic
+and test (color) cart, instructions are provide to set the pot
+adjustment having Hue 1x and Hue 15x (F$) match or within one
shade of each other, both a 'goldenrod'.
-At power on, the system's phase shift appears as low as ~23
-degrees and after a considerable consistent runtime, can be as
-high as ~28 degrees.
-
-In general, the low end of ~23 degrees lasts for several seconds,
-whereas higher values such as ~25-27 degrees are the most
-dominant during system run time. 180 degrees colorburst takes
-place at ~25.7 degrees (A near exact match of Hue 1x and 15x -
-To the naked eye they appear to be the same).
-
-However, if the system is adjusted within the first several
-minutes of running, the warm up, consistent system run time,
-causes Hue 15x (F$) to become stronger/darker gold (More brown
-then ultimately red-brown); as well as leans Hue 14x (E$) more
-brown than green. Once achieving a phase shift of 27.7 degrees,
-Hue 14x (E$) and Hue 15x (F$) near-exact match Hue 1x and 2x
-respectively.
-
-Therefore, an ideal phase shift while accounting for properly
-calibrating a system's color palette within the first several
-minutes of it running via the pot adjustment, the reality of
-shifting while warming up, as well as maintaining differences
-between Hues 1x, 2x and 14x, 15x, would likely fall between 25.7
-and 27.7 degrees. Phase shifts 26.2 and 26.7 places Hue 15x/F$
-between Hue 1x and Hue 2x, having 26.2 degrees leaning closer to
+At power on, the system's phase shift appears as low as ~23
+degrees and after a considerable consistent runtime, can be as
+high as ~28 degrees.
+
+In general, the low end of ~23 degrees lasts for several seconds,
+whereas higher values such as ~25-27 degrees are the most
+dominant during system run time. 180 degrees colorburst takes
+place at ~25.7 degrees (A near exact match of Hue 1x and 15x -
+To the naked eye they appear to be the same).
+
+However, if the system is adjusted within the first several
+minutes of running, the warm up, consistent system run time,
+causes Hue 15x (F$) to become stronger/darker gold (More brown
+then ultimately red-brown); as well as leans Hue 14x (E$) more
+brown than green. Once achieving a phase shift of 27.7 degrees,
+Hue 14x (E$) and Hue 15x (F$) near-exact match Hue 1x and 2x
+respectively.
+
+Therefore, an ideal phase shift while accounting for properly
+calibrating a system's color palette within the first several
+minutes of it running via the pot adjustment, the reality of
+shifting while warming up, as well as maintaining differences
+between Hues 1x, 2x and 14x, 15x, would likely fall between 25.7
+and 27.7 degrees. Phase shifts 26.2 and 26.7 places Hue 15x/F$
+between Hue 1x and Hue 2x, having 26.2 degrees leaning closer to
Hue 1x and 26.7 degrees leaning closer to Hue 2x.
-
-The above notion would also harmonize with what has been
-documented within "Stella Programmer's Guide" for the colors of
-1x, 2x, 14x, 15x on the 2600 and 7800. 1x = Gold, 2x = Orange,
-14x (E$) = Orange-Green. 15x (F$) = Light Orange. Color
-descriptions are best measured in the middle of the brightness
-scale. It should be mentioned that Green-Yellow is referenced
-at Hue 13x (D$), nowhere near Hue 1x. A Green-Yellow Hue 1x is
-how the palette is manipulated and modified (in part) under a
+
+The above notion would also harmonize with what has been
+documented within "Stella Programmer's Guide" for the colors of
+1x, 2x, 14x, 15x on the 2600 and 7800. 1x = Gold, 2x = Orange,
+14x (E$) = Orange-Green. 15x (F$) = Light Orange. Color
+descriptions are best measured in the middle of the brightness
+scale. It should be mentioned that Green-Yellow is referenced
+at Hue 13x (D$), nowhere near Hue 1x. A Green-Yellow Hue 1x is
+how the palette is manipulated and modified (in part) under a
modern flat panel display.
-Additionally, the blue to red (And consequently blue to green)
-ratio proportions may appear different on a modern flat panel
-display than a CRT in some instances for the Atari 2600 system.
-Furthermore, you may have some variation of proportions even
+Additionally, the blue to red (And consequently blue to green)
+ratio proportions may appear different on a modern flat panel
+display than a CRT in some instances for the Atari 2600 system.
+Furthermore, you may have some variation of proportions even
within the same display type.
-
-One side effect of this on the console's palette is that some
-values of red may appear too pinkish - Too much blue to red.
-This is not the same as a traditional tint-hue control adjustment;
-rather, can be demonstrated by changing the blue ratio values
+
+One side effect of this on the console's palette is that some
+values of red may appear too pinkish - Too much blue to red.
+This is not the same as a traditional tint-hue control adjustment;
+rather, can be demonstrated by changing the blue ratio values
via MESS HLSL settings.
-Lastly, the Atari 5200 & 7800 NTSC color palettes hold the same
-hue structure order and have similar appearance differences that
+Lastly, the Atari 5200 & 7800 NTSC color palettes hold the same
+hue structure order and have similar appearance differences that
are dependent upon display type.
********************************************************************/
/*********************************